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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_TEST_CPP_UTIL_CLI_CALL_H
#define GRPC_TEST_CPP_UTIL_CLI_CALL_H
#include <map>
#include <grpcpp/channel.h>
#include <grpcpp/completion_queue.h>
#include <grpcpp/generic/generic_stub.h>
#include <grpcpp/support/status.h>
#include <grpcpp/support/string_ref.h>
namespace grpc {
class ClientContext;
namespace testing {
// CliCall handles the sending and receiving of generic messages given the name
// of the remote method. This class is only used by GrpcTool. Its thread-safe
// and thread-unsafe methods should not be used together.
class CliCall final {
public:
typedef std::multimap<grpc::string, grpc::string> OutgoingMetadataContainer;
typedef std::multimap<grpc::string_ref, grpc::string_ref>
IncomingMetadataContainer;
CliCall(const std::shared_ptr<grpc::Channel>& channel,
const grpc::string& method,
const OutgoingMetadataContainer& metadata);
~CliCall();
// Perform an unary generic RPC.
static Status Call(std::shared_ptr<grpc::Channel> channel,
const grpc::string& method, const grpc::string& request,
grpc::string* response,
const OutgoingMetadataContainer& metadata,
IncomingMetadataContainer* server_initial_metadata,
IncomingMetadataContainer* server_trailing_metadata);
// Send a generic request message in a synchronous manner. NOT thread-safe.
void Write(const grpc::string& request);
// Send a generic request message in a synchronous manner. NOT thread-safe.
void WritesDone();
// Receive a generic response message in a synchronous manner.NOT thread-safe.
bool Read(grpc::string* response,
IncomingMetadataContainer* server_initial_metadata);
// Thread-safe write. Must be used with ReadAndMaybeNotifyWrite. Send out a
// generic request message and wait for ReadAndMaybeNotifyWrite to finish it.
void WriteAndWait(const grpc::string& request);
// Thread-safe WritesDone. Must be used with ReadAndMaybeNotifyWrite. Send out
// WritesDone for gereneric request messages and wait for
// ReadAndMaybeNotifyWrite to finish it.
void WritesDoneAndWait();
// Thread-safe Read. Blockingly receive a generic response message. Notify
// writes if they are finished when this read is waiting for a resposne.
bool ReadAndMaybeNotifyWrite(
grpc::string* response,
IncomingMetadataContainer* server_initial_metadata);
// Finish the RPC.
Status Finish(IncomingMetadataContainer* server_trailing_metadata);
private:
std::unique_ptr<grpc::GenericStub> stub_;
grpc::ClientContext ctx_;
std::unique_ptr<grpc::GenericClientAsyncReaderWriter> call_;
grpc::CompletionQueue cq_;
gpr_mu write_mu_;
gpr_cv write_cv_; // Protected by write_mu_;
bool write_done_; // Portected by write_mu_;
};
} // namespace testing
} // namespace grpc
#endif // GRPC_TEST_CPP_UTIL_CLI_CALL_H
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